 Imports MySql.Data.MySqlClient 
 Imports System.Data.OleDb
Imports System.Data.SqlClient
 Imports System .Data .SqlServerCe 
 Imports System.Data.OracleClient 
Imports System.Data
Imports DTO
Public Class DANGKYHOCDao
Inherits AbstractDao
 #Region "New" 
 Public Sub New(ByVal connection As KetNoiDto)
 MyBase.New(connection)
 End Sub
 Public Sub New( ByVal IDDANGKYHOC As System.Int32, ByVal connection As KetNoiDto)
 MyBase.New("DANGKYHOC", "select * from DANGKYHOC where IDDANGKYHOC=" & IDDANGKYHOC & "", connection)
 End Sub
 #End Region 
 Public Sub Them(ByVal Dto As DANGKYHOCDto)
 Dim strsql As String
 strsql = "Insert into DANGKYHOC(IDHOCSINH,IDLOPHOC,TRANGTHAI,GHICHU) values (?,?,?,?)
 Moketnoi()
 select case ketnoi.MSsql 
 Case Class_KieuDL.Access
 Dim cmd As New OleDbCommand(strsql, Ket_noi_access)
cmd.Parameters.Add("@IDHOCSINH", OleDbType.Integer)
cmd.Parameters.Add("@IDLOPHOC", OleDbType.Integer)
cmd.Parameters.Add("@TRANGTHAI", OleDbType.Integer)
cmd.Parameters.Add("@GHICHU", OleDbType.Integer)
cmd.Parameters("@IDHOCSINH").Value = Dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = Dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = Dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = Dto.GHICHU
 cmd.ExecuteNonQuery()
 strsql = "Select @@IDENTITY"
 cmd = New OleDbCommand(strsql, Ket_noi_access)
 Dto.IDDANGKYHOC = cmd.ExecuteScalar()
 Case Class_KieuDL.Sql,Class_KieuDL.sqlExpress
 strsql = "Insert into DANGKYHOC(IDHOCSINH,IDLOPHOC,TRANGTHAI,GHICHU) values (@IDHOCSINH,@IDLOPHOC,@TRANGTHAI,@GHICHU)
 Dim cmd As New sqlCommand(strsql, Ket_noi_sql)
cmd.Parameters.Add("@IDHOCSINH", SqlDbType.Int)
cmd.Parameters.Add("@IDLOPHOC", SqlDbType.Int)
cmd.Parameters.Add("@TRANGTHAI", SqlDbType.Int)
cmd.Parameters.Add("@GHICHU", SqlDbType.Int)
cmd.Parameters("@IDHOCSINH").Value = Dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = Dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = Dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = Dto.GHICHU
 cmd.ExecuteNonQuery()
 strsql = "Select @@IDENTITY"
 cmd = New sqlCommand(strsql, Ket_noi_sql)
 Dto.IDDANGKYHOC = cmd.ExecuteScalar()
 Case Class_KieuDL.SqlCe
 strsql = "Insert into DANGKYHOC(IDHOCSINH,IDLOPHOC,TRANGTHAI,GHICHU) values (@IDHOCSINH,@IDLOPHOC,@TRANGTHAI,@GHICHU)
 Dim cmd As New sqlceCommand(strsql, Ket_noi_SqlCe)
cmd.Parameters("@IDHOCSINH").Value = Dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = Dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = Dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = Dto.GHICHU
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Oracle
 strsql = "Insert into DANGKYHOC(IDHOCSINH,IDLOPHOC,TRANGTHAI,GHICHU) values (@IDHOCSINH,@IDLOPHOC,@TRANGTHAI,@GHICHU)
 Dim cmd As New OracleCommand(strsql, Ket_noi_Oracle)
cmd.Parameters("@IDHOCSINH").Value = Dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = Dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = Dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = Dto.GHICHU
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Mysql
 strsql = "Insert into DANGKYHOC(IDHOCSINH,IDLOPHOC,TRANGTHAI,GHICHU) values (@IDHOCSINH,@IDLOPHOC,@TRANGTHAI,@GHICHU)
 Dim cmd As New MySqlCommand(strsql, Ket_noi_MySql)
cmd.Parameters.Add("@IDHOCSINH", MySqlDbType.Int32)
cmd.Parameters.Add("@IDLOPHOC", MySqlDbType.Int32)
cmd.Parameters.Add("@TRANGTHAI", MySqlDbType.Int32)
cmd.Parameters.Add("@GHICHU", MySqlDbType.Int32)
cmd.Parameters("@IDHOCSINH").Value = Dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = Dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = Dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = Dto.GHICHU
 cmd.ExecuteNonQuery()
 End Select
 Ngatketnoi()
 End Sub
 Public Sub Xoa( ByVal IDDANGKYHOC As System.Int32 )
 Dim strSQL As String
 Moketnoi()
 select case ketnoi.MSsql 
 Case Class_KieuDL.Access
strSQL = "Delete From DANGKYHOC Where IDDANGKYHOC= ? 
Dim cmd As New OleDbCommand(strSQL, Ket_noi_access)
cmd.Parameters.Add("@IDDANGKYHOC",OleDbType.Integer).Value = IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Sql,Class_KieuDL.sqlExpress 
strSQL = "Delete From DANGKYHOC Where IDDANGKYHOC= @IDDANGKYHOC
Dim cmd As New sqlCommand(strSQL, Ket_noi_sql)
cmd.Parameters.Add("@IDDANGKYHOC",SqlDbType.Int).value=IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.SqlCe
strSQL = "Delete From DANGKYHOC Where IDDANGKYHOC=" & IDDANGKYHOC & "
 Dim cmd As New SqlCeCommand(strSQL, Ket_noi_SqlCe)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Oracle
strSQL = "Delete From DANGKYHOC Where IDDANGKYHOC=" & IDDANGKYHOC & "
 Dim cmd As New OracleCommand(strSQL, Ket_noi_Oracle)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.MySql
strSQL = "Delete From DANGKYHOC Where IDDANGKYHOC=" & IDDANGKYHOC & "
 Dim cmd As New MySqlCommand(strSQL, Ket_noi_MySql)
 cmd.ExecuteNonQuery()
 End Select
 Ngatketnoi()
 End Sub
 Public Sub sua(ByVal dto As DANGKYHOCDto)
 Dim strSQL As String
 Moketnoi()
 select case ketnoi.MSsql 
 Case Class_KieuDL.Access
 strSQL = "Update DANGKYHOC Set IDHOCSINH=? ,IDLOPHOC=? ,TRANGTHAI=? ,GHICHU= ? where IDDANGKYHOC= ? "
 Dim cmd As New OleDbCommand(strSQL, Ket_noi_access)
cmd.Parameters.Add("@IDHOCSINH", OleDbType.Integer)
cmd.Parameters.Add("@IDLOPHOC", OleDbType.Integer)
cmd.Parameters.Add("@TRANGTHAI", OleDbType.Integer)
cmd.Parameters.Add("@GHICHU", OleDbType.Integer)
cmd.Parameters.Add("@IDDANGKYHOC", OleDbType.Integer)
cmd.Parameters("@IDHOCSINH").Value = dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = dto.GHICHU
cmd.Parameters("@IDDANGKYHOC").Value = dto.IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Sql,Class_KieuDL.sqlExpress 
 strSQL = "Update DANGKYHOC Set IDHOCSINH= @IDHOCSINH , IDLOPHOC= @IDLOPHOC , TRANGTHAI= @TRANGTHAI , GHICHU= @GHICHU where IDDANGKYHOC= @IDDANGKYHOC"
 Dim cmd As New sqlCommand(strSQL, Ket_noi_sql)
cmd.Parameters.Add("@IDHOCSINH", SqlDbType.Int)
cmd.Parameters.Add("@IDLOPHOC", SqlDbType.Int)
cmd.Parameters.Add("@TRANGTHAI", SqlDbType.Int)
cmd.Parameters.Add("@GHICHU", SqlDbType.Int)
cmd.Parameters.Add("@IDDANGKYHOC", SqlDbType.Int)
cmd.Parameters("@IDHOCSINH").Value = dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = dto.GHICHU
cmd.Parameters("@IDDANGKYHOC").Value = dto.IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.SqlCe
 strSQL = "Update DANGKYHOC Set IDHOCSINH= @IDHOCSINH , IDLOPHOC= @IDLOPHOC , TRANGTHAI= @TRANGTHAI , GHICHU= @GHICHU where IDDANGKYHOC= @IDDANGKYHOC"
 Dim cmd As New SqlCeCommand(strSQL, Ket_noi_SqlCe)
cmd.Parameters("@IDHOCSINH").Value = dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = dto.GHICHU
cmd.Parameters("@IDDANGKYHOC").Value = dto.IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Oracle
 strSQL = "Update DANGKYHOC Set IDHOCSINH= @IDHOCSINH , IDLOPHOC= @IDLOPHOC , TRANGTHAI= @TRANGTHAI , GHICHU= @GHICHU where IDDANGKYHOC= @IDDANGKYHOC"
 Dim cmd As New OracleCommand(strSQL, Ket_noi_Oracle)
cmd.Parameters("@IDHOCSINH").Value = dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = dto.GHICHU
cmd.Parameters("@IDDANGKYHOC").Value = dto.IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.MySql
 strSQL = "Update DANGKYHOC Set IDHOCSINH= @IDHOCSINH , IDLOPHOC= @IDLOPHOC , TRANGTHAI= @TRANGTHAI , GHICHU= @GHICHU where IDDANGKYHOC= @IDDANGKYHOC"
 Dim cmd As New MySqlCommand(strSQL, Ket_noi_MySql)
cmd.Parameters.Add("@IDHOCSINH", MySqlDbType.Int32)
cmd.Parameters.Add("@IDLOPHOC", MySqlDbType.Int32)
cmd.Parameters.Add("@TRANGTHAI", MySqlDbType.Int32)
cmd.Parameters.Add("@GHICHU", MySqlDbType.Int32)
cmd.Parameters.Add("@IDDANGKYHOC", MySqlDbType.Int32)
cmd.Parameters("@IDHOCSINH").Value = dto.IDHOCSINH
cmd.Parameters("@IDLOPHOC").Value = dto.IDLOPHOC
cmd.Parameters("@TRANGTHAI").Value = dto.TRANGTHAI
cmd.Parameters("@GHICHU").Value = dto.GHICHU
cmd.Parameters("@IDDANGKYHOC").Value = dto.IDDANGKYHOC
 cmd.ExecuteNonQuery()
 End Select
 Ngatketnoi()
 End Sub
 Public Sub SuaIDHOCSINH( ByVal IDHOCSINH as System.Int32, ByVal IDDANGKYHOC As System.Int32 )
 Dim strSQL As String
 Moketnoi()
 select case ketnoi.MSsql 
 Case Class_KieuDL.Access
 strSQL = "Update DANGKYHOC Set IDHOCSINH = ?  where IDDANGKYHOC= ? "
 Dim cmd As New OleDbCommand(strSQL, Ket_noi_access)
 cmd.Parameters.Add("@IDHOCSINH", OleDbType.Integer)
 cmd.Parameters.Add("@IDDANGKYHOC", OleDbType.Integer)
 cmd.Parameters("@IDHOCSINH").Value =  IDHOCSINH
cmd.Parameters("@IDDANGKYHOC").Value =  IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Sql,Class_KieuDL.sqlExpress 
 strSQL = "Update DANGKYHOC Set IDHOCSINH = @IDHOCSINH  where IDDANGKYHOC= @IDDANGKYHOC"
 Dim cmd As New sqlCommand(strSQL, Ket_noi_sql)
 cmd.Parameters.Add("@IDHOCSINH", SqlDbType.Int)
 cmd.Parameters.Add("@IDDANGKYHOC", SqlDbType.Int)
 cmd.Parameters("@IDHOCSINH").Value =  IDHOCSINH
cmd.Parameters("@IDDANGKYHOC").Value =  IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.SqlCe
 strSQL = "Update DANGKYHOC Set IDHOCSINH =" & IDHOCSINH & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New SqlCeCommand(strSQL, Ket_noi_SqlCe)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Oracle
 strSQL = "Update DANGKYHOC Set IDHOCSINH =" & IDHOCSINH & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New OracleCommand(strSQL, Ket_noi_Oracle)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.MySql
 strSQL = "Update DANGKYHOC Set IDHOCSINH =" & IDHOCSINH & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New MySqlCommand(strSQL, Ket_noi_MySql)
 cmd.ExecuteNonQuery()
 End Select 
 Ngatketnoi()
 End Sub
 Public Sub SuaIDLOPHOC( ByVal IDLOPHOC as System.Int32, ByVal IDDANGKYHOC As System.Int32 )
 Dim strSQL As String
 Moketnoi()
 select case ketnoi.MSsql 
 Case Class_KieuDL.Access
 strSQL = "Update DANGKYHOC Set IDLOPHOC = ?  where IDDANGKYHOC= ? "
 Dim cmd As New OleDbCommand(strSQL, Ket_noi_access)
 cmd.Parameters.Add("@IDLOPHOC", OleDbType.Integer)
 cmd.Parameters.Add("@IDDANGKYHOC", OleDbType.Integer)
 cmd.Parameters("@IDLOPHOC").Value =  IDLOPHOC
cmd.Parameters("@IDDANGKYHOC").Value =  IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Sql,Class_KieuDL.sqlExpress 
 strSQL = "Update DANGKYHOC Set IDLOPHOC = @IDLOPHOC  where IDDANGKYHOC= @IDDANGKYHOC"
 Dim cmd As New sqlCommand(strSQL, Ket_noi_sql)
 cmd.Parameters.Add("@IDLOPHOC", SqlDbType.Int)
 cmd.Parameters.Add("@IDDANGKYHOC", SqlDbType.Int)
 cmd.Parameters("@IDLOPHOC").Value =  IDLOPHOC
cmd.Parameters("@IDDANGKYHOC").Value =  IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.SqlCe
 strSQL = "Update DANGKYHOC Set IDLOPHOC =" & IDLOPHOC & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New SqlCeCommand(strSQL, Ket_noi_SqlCe)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Oracle
 strSQL = "Update DANGKYHOC Set IDLOPHOC =" & IDLOPHOC & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New OracleCommand(strSQL, Ket_noi_Oracle)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.MySql
 strSQL = "Update DANGKYHOC Set IDLOPHOC =" & IDLOPHOC & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New MySqlCommand(strSQL, Ket_noi_MySql)
 cmd.ExecuteNonQuery()
 End Select 
 Ngatketnoi()
 End Sub
 Public Sub SuaTRANGTHAI( ByVal TRANGTHAI as System.Int32, ByVal IDDANGKYHOC As System.Int32 )
 Dim strSQL As String
 Moketnoi()
 select case ketnoi.MSsql 
 Case Class_KieuDL.Access
 strSQL = "Update DANGKYHOC Set TRANGTHAI = ?  where IDDANGKYHOC= ? "
 Dim cmd As New OleDbCommand(strSQL, Ket_noi_access)
 cmd.Parameters.Add("@TRANGTHAI", OleDbType.Integer)
 cmd.Parameters.Add("@IDDANGKYHOC", OleDbType.Integer)
 cmd.Parameters("@TRANGTHAI").Value =  TRANGTHAI
cmd.Parameters("@IDDANGKYHOC").Value =  IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Sql,Class_KieuDL.sqlExpress 
 strSQL = "Update DANGKYHOC Set TRANGTHAI = @TRANGTHAI  where IDDANGKYHOC= @IDDANGKYHOC"
 Dim cmd As New sqlCommand(strSQL, Ket_noi_sql)
 cmd.Parameters.Add("@TRANGTHAI", SqlDbType.Int)
 cmd.Parameters.Add("@IDDANGKYHOC", SqlDbType.Int)
 cmd.Parameters("@TRANGTHAI").Value =  TRANGTHAI
cmd.Parameters("@IDDANGKYHOC").Value =  IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.SqlCe
 strSQL = "Update DANGKYHOC Set TRANGTHAI =" & TRANGTHAI & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New SqlCeCommand(strSQL, Ket_noi_SqlCe)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Oracle
 strSQL = "Update DANGKYHOC Set TRANGTHAI =" & TRANGTHAI & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New OracleCommand(strSQL, Ket_noi_Oracle)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.MySql
 strSQL = "Update DANGKYHOC Set TRANGTHAI =" & TRANGTHAI & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New MySqlCommand(strSQL, Ket_noi_MySql)
 cmd.ExecuteNonQuery()
 End Select 
 Ngatketnoi()
 End Sub
 Public Sub SuaGHICHU( ByVal GHICHU as System.Int32, ByVal IDDANGKYHOC As System.Int32 )
 Dim strSQL As String
 Moketnoi()
 select case ketnoi.MSsql 
 Case Class_KieuDL.Access
 strSQL = "Update DANGKYHOC Set GHICHU = ?  where IDDANGKYHOC= ? "
 Dim cmd As New OleDbCommand(strSQL, Ket_noi_access)
 cmd.Parameters.Add("@GHICHU", OleDbType.Integer)
 cmd.Parameters.Add("@IDDANGKYHOC", OleDbType.Integer)
 cmd.Parameters("@GHICHU").Value =  GHICHU
cmd.Parameters("@IDDANGKYHOC").Value =  IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Sql,Class_KieuDL.sqlExpress 
 strSQL = "Update DANGKYHOC Set GHICHU = @GHICHU  where IDDANGKYHOC= @IDDANGKYHOC"
 Dim cmd As New sqlCommand(strSQL, Ket_noi_sql)
 cmd.Parameters.Add("@GHICHU", SqlDbType.Int)
 cmd.Parameters.Add("@IDDANGKYHOC", SqlDbType.Int)
 cmd.Parameters("@GHICHU").Value =  GHICHU
cmd.Parameters("@IDDANGKYHOC").Value =  IDDANGKYHOC
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.SqlCe
 strSQL = "Update DANGKYHOC Set GHICHU =" & GHICHU & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New SqlCeCommand(strSQL, Ket_noi_SqlCe)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.Oracle
 strSQL = "Update DANGKYHOC Set GHICHU =" & GHICHU & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New OracleCommand(strSQL, Ket_noi_Oracle)
 cmd.ExecuteNonQuery()
 Case Class_KieuDL.MySql
 strSQL = "Update DANGKYHOC Set GHICHU =" & GHICHU & "  where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Dim cmd As New MySqlCommand(strSQL, Ket_noi_MySql)
 cmd.ExecuteNonQuery()
 End Select 
 Ngatketnoi()
 End Sub
 Public Sub layBang()
 Chuoi_SQL = " Select * from DANGKYHOC
 Doc_bang()
 End Sub
 Public Sub layBangTheoIDDANGKYHOC(ByVal ARRAY1 As ArrayList)
 Dim DK As String = ""
 If ARRAY1.Count > 0 Then
 For I As Integer = 0 To ARRAY1.Count - 1
 DK = DK & IIf(DK <> "", " OR ", "") & "IDDANGKYHOC=" & ARRAY1.Item(i) & ""
 Next
 End If
 If DK <> "" Then DK = " WHERE " & DK 
 Chuoi_SQL = " Select * from DANGKYHOC" & DK
 Doc_bang()
 End Sub
 Public Sub layBangTheoIDDANGKYHOC(ByVal IDDANGKYHOC As System.Int32 )
 Chuoi_SQL = " Select * from DANGKYHOC where  IDDANGKYHOC = " & IDDANGKYHOC & ""
 Doc_bang()
 End Sub
 Public Sub XOABangTheoIDDANGKYHOC(ByVal IDDANGKYHOC As System.Int32)
 Dim strsql As String
 strSQL = "Delete From DANGKYHOC Where IDDANGKYHOC=" & IDDANGKYHOC & ""
 Thuc_hien_lenh(strsql)
 End Sub
 Public Sub layBangTheoIDHOCSINH(ByVal ARRAY1 As ArrayList)
 Dim DK As String = ""
 If ARRAY1.Count > 0 Then
 For I As Integer = 0 To ARRAY1.Count - 1
 DK = DK & IIf(DK <> "", " OR ", "") & "IDHOCSINH=" & ARRAY1.Item(i) & ""
 Next
 End If
 If DK <> "" Then DK = " WHERE " & DK 
 Chuoi_SQL = " Select * from DANGKYHOC" & DK
 Doc_bang()
 End Sub
 Public Sub layBangTheoIDHOCSINH(ByVal IDHOCSINH As System.Int32 )
 Chuoi_SQL = " Select * from DANGKYHOC where  IDHOCSINH = " & IDHOCSINH & ""
 Doc_bang()
 End Sub
 Public Sub XOABangTheoIDHOCSINH(ByVal IDHOCSINH As System.Int32)
 Dim strsql As String
 strSQL = "Delete From DANGKYHOC Where IDHOCSINH=" & IDHOCSINH & ""
 Thuc_hien_lenh(strsql)
 End Sub
 Public Sub layBangTheoIDLOPHOC(ByVal ARRAY1 As ArrayList)
 Dim DK As String = ""
 If ARRAY1.Count > 0 Then
 For I As Integer = 0 To ARRAY1.Count - 1
 DK = DK & IIf(DK <> "", " OR ", "") & "IDLOPHOC=" & ARRAY1.Item(i) & ""
 Next
 End If
 If DK <> "" Then DK = " WHERE " & DK 
 Chuoi_SQL = " Select * from DANGKYHOC" & DK
 Doc_bang()
 End Sub
 Public Sub layBangTheoIDLOPHOC(ByVal IDLOPHOC As System.Int32 )
 Chuoi_SQL = " Select * from DANGKYHOC where  IDLOPHOC = " & IDLOPHOC & ""
 Doc_bang()
 End Sub
 Public Sub XOABangTheoIDLOPHOC(ByVal IDLOPHOC As System.Int32)
 Dim strsql As String
 strSQL = "Delete From DANGKYHOC Where IDLOPHOC=" & IDLOPHOC & ""
 Thuc_hien_lenh(strsql)
 End Sub
 Public Sub layBangTheoTRANGTHAI(ByVal ARRAY1 As ArrayList)
 Dim DK As String = ""
 If ARRAY1.Count > 0 Then
 For I As Integer = 0 To ARRAY1.Count - 1
 DK = DK & IIf(DK <> "", " OR ", "") & "TRANGTHAI=" & ARRAY1.Item(i) & ""
 Next
 End If
 If DK <> "" Then DK = " WHERE " & DK 
 Chuoi_SQL = " Select * from DANGKYHOC" & DK
 Doc_bang()
 End Sub
 Public Sub layBangTheoTRANGTHAI(ByVal TRANGTHAI As System.Int32 )
 Chuoi_SQL = " Select * from DANGKYHOC where  TRANGTHAI = " & TRANGTHAI & ""
 Doc_bang()
 End Sub
 Public Sub XOABangTheoTRANGTHAI(ByVal TRANGTHAI As System.Int32)
 Dim strsql As String
 strSQL = "Delete From DANGKYHOC Where TRANGTHAI=" & TRANGTHAI & ""
 Thuc_hien_lenh(strsql)
 End Sub
 Public Sub layBangTheoGHICHU(ByVal ARRAY1 As ArrayList)
 Dim DK As String = ""
 If ARRAY1.Count > 0 Then
 For I As Integer = 0 To ARRAY1.Count - 1
 DK = DK & IIf(DK <> "", " OR ", "") & "GHICHU=" & ARRAY1.Item(i) & ""
 Next
 End If
 If DK <> "" Then DK = " WHERE " & DK 
 Chuoi_SQL = " Select * from DANGKYHOC" & DK
 Doc_bang()
 End Sub
 Public Sub layBangTheoGHICHU(ByVal GHICHU As System.Int32 )
 Chuoi_SQL = " Select * from DANGKYHOC where  GHICHU = " & GHICHU & ""
 Doc_bang()
 End Sub
 Public Sub XOABangTheoGHICHU(ByVal GHICHU As System.Int32)
 Dim strsql As String
 strSQL = "Delete From DANGKYHOC Where GHICHU=" & GHICHU & ""
 Thuc_hien_lenh(strsql)
 End Sub
 Public Sub layBangNhieuTable
 Chuoi_SQL = " Select IDDANGKYHOC ,IDHOCSINH ,IDLOPHOC ,TRANGTHAI ,GHICHU  from DANGKYHOC"
 Doc_bang()
 End sub
Public Sub TaoTable()
Dim strsql As String
strsql = ""
Select Case ketnoi.MsSql
Case Class_KieuDL.Access 
Case Class_KieuDL.Sql, Class_KieuDL.sqlExpress
strsql = ""
Case Class_KieuDL.SqlCe
strsql = ""
Case Class_KieuDL.Oracle
strsql = ""
Case else 
strsql = ""
End Select
Thuc_hien_lenh(strsql)
End Sub
 End Class

